The definition of lake ice-out varies from lake
to lake, and individual to individual. For some,
ice-out occurs only when the lake is completely
free of ice. For others, ice-out is defined as
the moment when navigation is possible from point
A to point B. And yet for others, ice-out is when
90 percent of the lake is ice free. Due to the
variable definitions of this rather subjective
observation, the State Climatology Office
attempts to contact the same individuals each
year to maintain a consistent record. The table
below will depict 2004 information obtained from
this informal poll. The table is updated on Mondays.